Fixed capacity and variable member grouping assignment of orthogonal variable spreading factor code tree for code division multiple access networks
نویسندگان
چکیده
منابع مشابه
Quasi-orthogonal sequences for code-division multiple-access systems
In this paper, the notion of quasi-orthogonal sequence (QOS) as a means of increasing the number of channels in synchronous code-division multiple-access (CDMA) systems that employ Walsh sequences for spreading information signals and separating channels is introduced. It is shown that a QOS sequence may be regarded as a class of bent (almost bent) functions possessing, in addition, a certain w...
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1 CDMA Concept 4 1.1 Basic Principles of Spread Spectrum . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.1.1 Direct Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1.2 Frequency Hopping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.1.3 Time Hopper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.1.4 Hybrid Systems . ....
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ژورنال
عنوان ژورنال: The Journal of Engineering
سال: 2014
ISSN: 2051-3305,2051-3305
DOI: 10.1049/joe.2014.0149